Home / 2,643.09-3,961.86-1,719.28

Finding the Fourth Proportional to 2,643.09, 3,961.86 and 1,719.28

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Solution

The fourth proportional to 2,643.09, 3,961.86 and 1,719.28 is: 2,577.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.09 : 3,961.86 = 1,719.28 : x
  2. Step 2: Convert to fraction form
    2,643.09/3,961.86 = 1,719.28/x
  3. Step 3: Cross multiply
    2,643.09x = 3,961.86 × 1,719.28
  4. Step 4: Simplify right side
    2,643.09x = 6,811,546.66
  5. Step 5: Solve for x
    x = 6,811,546.66/2,643.09
  6. Step 6: Final answer
    x = 2,577.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.